Patent US1540221A successfully refreshed from Google Patents.
Patent US897410A successfully refreshed from Google Patents.
US897410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon-holder.
Assignee: Individual
•
Filing: 1906-07-30
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Granted: 1908-09-01
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Expires: 1926-07-30
Abstract
No abstract record available.
Inventors
- 👤 Oscar A Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:03
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/98; H05; H05B; H05B31/00; H05B31/02; H05B31/18; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17786; Y10T403/00; Y10T403/60; Y10T403/606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1911-09-01 | 1912-03-02 | 1912-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-09-01 | 1916-03-02 | 1916-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-09-01 | 1920-03-02 | 1920-09-01 | $7700.00 | Window Closed / Lapsed |